Sample Dimensions Influence Strength and Crystal Plasticity Export

@article{Uchic, abstract = {When a crystal deforms plastically, phenomena such as dislocation storage, multiplication, motion, pinning, and nucleation occur over the submicron-to-nanometer scale. Here we report measurements of plastic yielding for single crystals of micrometer-sized dimensions for three different types of metals. We find that within the tests, the overall sample dimensions artificially limit the length scales available for plastic processes. The results show dramatic size effects at surprisingly large sample dimensions. These results emphasize that at the micrometer scale, one must define both the external geometry and internal structure to characterize the strength of a material.}, author = {Uchic, Michael D. and Dimiduk, Dennis M. and Florando, Jeffrey N. and Nix, William D.}, citeulike-article-id = {276959}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1098993}, citeulike-linkout-1 = {http://www.sciencemag.org/cgi/content/abstract/305/5686/986?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=uchic&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/15310897}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=15310897}, citeulike-linkout-4 = {http://www.sciencemag.org/cgi/content/full/305/5686/986}, day = {13}, doi = {10.1126/science.1098993}, journal = {Science}, keywords = {column-compression, size-dependence}, month = {August}, number = {5686}, pages = {986--989}, posted-at = {2006-04-01 17:58:46}, priority = {0}, title = {Sample Dimensions Influence Strength and Crystal Plasticity}, url = {http://dx.doi.org/10.1126/science.1098993}, volume = {305}, year = {2004} }

TY - JOUR ID - Uchic L3 - citeulike-article-id:276959 N2 - When a crystal deforms plastically, phenomena such as dislocation storage, multiplication, motion, pinning, and nucleation occur over the submicron-to-nanometer scale. Here we report measurements of plastic yielding for single crystals of micrometer-sized dimensions for three different types of metals. We find that within the tests, the overall sample dimensions artificially limit the length scales available for plastic processes. The results show dramatic size effects at surprisingly large sample dimensions. These results emphasize that at the micrometer scale, one must define both the external geometry and internal structure to characterize the strength of a material. IS - 5686 JF - Science EP - 989 TI - Sample Dimensions Influence Strength and Crystal Plasticity VL - 305 SP - 986 KW - column-compression KW - size-dependence AU - Uchic, Michael AU - Dimiduk, Dennis AU - Florando, Jeffrey AU - Nix, William PY - 2004/08/13/ UR - http://dx.doi.org/10.1126/science.1098993 ER -